Yield formation characteristics of precision hill-direct-seeding late rice.

The yield formation characteristics of two density precision hill-direct-seeding were studied in late season rice,compared with manual transplanting.The results showed that the yield of two density precision hill-direct-seeding was higher than that of manual transplanting,and increased 2.75%-10.48% respectively.The effective panicle number and seed setting rate of precision hill-direct-seeding were significantly higher than that of manual transplanting.In booting stage and full heading stage,the leaf chlorophyll content and the photosynthetic rate of precision hill-direct-seeding was significantly higher than that of manual transplanting.